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CC1125DK: Please answer the following

sudhir mishra
Expert 1100 points
Part Number: CC1125DK
Other Parts Discussed in Thread: CC1125

Please answer the following

  1. Criteria for sending packets data from TX FIFO over RF, I mean 2 byte in TX FIFO how much it wait to send this data.
  2. 2. Preamble sequence receive and then sync word detection ..:- After that packet length is configure as 128 byte but after receiving 10 byte not data coming then again preamble is RX is preamble is consider as data part in this case?

3. Is there any timing information coming in receiver side.

4.In infinite packet length mode is packet size need to be pre fixed e.g 1200 byte.

5.In which documents detail about FIFO controller and packet handler, There is not sufficient information in user guide so I understand the core.

-- 
Regards 
Sudhir
  • 0
    TI__Guru* 79361 points

    1)

    How long time it takes to send the data depends on the data rate. The time it takes from IDLE to TX with and without calibration is stated in section 4.13 in the CC1125 data sheet.

    2)

    Do not understand the question. If you have configured the radio for variable packet length the radio will interpret the first byte received after the sync word as the length and then receive that many bytes. If you are using fixed packet length mode, you will receive as many bytes as configured through the PKTLEN register

    3)

    What information are you referring to? Timing info is available in the data sheet (section 4.13)

    4)

    In infinite packet length mode the radio will stay in RX forever unless you

        a) Strobe IDLE

        b) The radio FIFO overflows if you do not read the FIFO fast enough

        c ) You reconfigure the radio to fixed packet length mode like in the infinite packet length mode code example found here: www.ti.com/.../swrc253

    5)

    We do not have other information than the User Guide. You should also look at the code examples available for the CC112x:

    Siri